package services

import (
	"learnsteam/cslms-api/internal/models"
	"learnsteam/cslms-api/internal/repositories"
)

type paperService struct {
	repository          repositories.PaperRepository
	paperQuizRepository repositories.PaperQuizRepository
}

type PaperService interface {
	List(int64, string, int, int) (*[]models.PaperResponse, error)
	Total(int64, string) (int64, error)

	Find(int64) (*models.PaperResponse, error)
	Get(int64) (*models.Paper, error)
	Update(*models.Paper) (*models.Paper, error)

	UpdateScore(int64) (*models.Paper, error)
}

func NewPaperService(repository repositories.PaperRepository, paperQuizRepository repositories.PaperQuizRepository) PaperService {
	return &paperService{
		repository:          repository,
		paperQuizRepository: paperQuizRepository,
	}
}

func (s *paperService) List(user_id int64, q string, page int, limit int) (*[]models.PaperResponse, error) {
	return s.repository.List(user_id, q, page, limit)
}

func (s *paperService) Total(user_id int64, q string) (int64, error) {
	return s.repository.Total(user_id, q)
}

func (s *paperService) Find(id int64) (*models.PaperResponse, error) {
	return s.repository.Find(id)
}

func (s *paperService) Get(id int64) (*models.Paper, error) {
	return s.repository.Get(id)
}

func (s *paperService) Update(paper *models.Paper) (*models.Paper, error) {
	result, err := s.repository.Update(paper)

	return result, err
}

func (s *paperService) UpdateScore(userquizpaper_id int64) (*models.Paper, error) {
	score, err := s.paperQuizRepository.SumScore(userquizpaper_id)
	if err != nil {
		return nil, err
	}

	userquizpaper, err := s.repository.Get(userquizpaper_id)
	if err != nil {
		return nil, err
	}

	userquizpaper.UserScore = score
	return s.repository.Update(userquizpaper)
}